Question

1) calcule as equações:
1. 0,5x+26=5,1
2. 4x-12=x
3. 5x-27=-4x
4. 2x-7=-10
5. 11x+17=10x+13
6. 5x+21=10x-19

Answer 1

Resposta:

4x-x=12

3x=12

x=4

5x+4x=27

9x=27

x=3

2x=-10+7

2x=3

x=3/2

11x-10x=13-17

x=4

5x-10x=-19-21

-x=-40 .(-1)

x=40

espero ter ajudado :)

Answer 2

Resposta:

1. $[\frac{x}{2} =5,1- 26]=> [\frac{x}{2} =-20,9] =>[x=2. -20,9] => [x=-41,8]$

2. $[4x-x-12=0]=>[3x-12=0]=>[3x=12]=>[x=\frac{12}{3}]=>[x=4]$

3. $[5x+4x-27=0]=>[9x-27=0]=>[9x=27]=>[x=\frac{27}{9}]=>[x=3]$

4. $[2x=-10+7]=>[2x=-3]=>[x=\frac{-3}{2}]=>[x=-1,5]$

5. $[11x-10x+17=13] => [1x+17=13]=>[x=13-17]=>[x=-4]$

6. $[5x-10x+21=-19]=>[-5x+21=-19]=>[-5x=-19-21]=[-5x=-40]=>[x=\frac{-40}{-5}=[x=8]$

Coloque como melhor resposta por favor! Vlw.